Sheerness meter



to move with respect to the lamp 28 and thus vary the Size Of the beam which is projected through the opening |8. ''he 1attel' Inay be provided. With an iris diaphragIn |9, as explained in connection vvith Figure 2. ;he filan1ent of the lanlp 28 is energized frn 9 battery 33 connected through a rhe0stat 3 to the conductors 35. v0ltn1eer 36 Inay be connected across the conductors t0 detern1ine the v0ltge applied t0 the f11anlent by the 1T1a'11ipl11ati0n of the rheOSta It '-vi11 be underst00d that a 1ight sensitive device sin1ilar to that explained in connection With Figure 2 is used with the apparatus shown in Eigure 3 and if desired, a light lter 25 nlay also be en1p10yed for any one 0f the reasons explained in conneci0n With the earlier gure' 'he fact that the parab01ic mirror 3| may be moved right or left vvith respect t0 the lan1p 28 provides sti11 further adjustment of the light Which passes through the opening la and is projected through the hosiery onto the sujtably calibrated light meter.

'0I1 the f0Teg0ing it iS evident tha have discsed an apparatus for nleasuring the Sheerness of 1ine abricS such as Women's hosiery, vvith any degree of accuracy desired and taking into account the eeCS that the dierent colors of the fabric n1ay have n either preventing 0I' retarding the pTOpagtion of the light. Afte^ the apparatus has been Set up and fully c1ibrat ed for a standard c0101 of hosiery, it is a very Silnple Inater for the 0peaOr to successive1y insert and remove the fabrics from the appa- Tatus, testing the fabric under exactly the Sanle conditions of light, S0 that the indications given at he light Ineter repreSen abs0luely crue con1 parisons of the respective SheeneSS.

t vvil] be understood that desire t0 C01pe hend ,rithin hiS invention Such I10dicat0ns as come Whin the scope of the claims and the invention.

Iaving thus fully described nly nventi0n` vvhat claiIn as new and desire to secure by Letters Patent, is:

1. Apparatu8 for Ineasuring the Sheerness of vv0llen's hosiery Said apparatus colnprising a light source contained in an enc10sure provided with an opening, Said light source being constituted of an electric laInp to vvhich energy is supplied foD a constant voltage source, dia

phragn1 0f adjustaible Size being Secured over said opening, a second inc10sure having an opening presented to the opening in the first inc]0sure and containing a light sensitive device, Said device being provided with a p0inter which T10ves over a Scale calibrated in degrees of Sheerness, Said inc10sures being spaced apart a' Sufcien distance to receive a double thickness of the hosiery through vvhich light is projected onto the light Sensitive unit for detern1ining the degree of sheerness of the h0siery, a Stretching f'Ine for supporting the hosiery between said encl0sures, and a light mter interposed between the hosiery and the opening in he nrst-Inentioned inc10- Sure the c010r of the light 1ter being approxi- Inately the Sarne as the color of the hosiery Which is being tested.

2. Apparatus fo! Ineasuring he Sheerness of Women's h0siery, Said apparatus c0fnpris1ng a light source contained in an enc10sure provided vvith an opening, Said light source being- Con" stituted of an electric lamp to which energy is Supp]ied fron1 a' constant v01tage source, a dia' phragn1 0f adjustable size being secured over said opening, a second enclosure having an opening presented to the opening in the first enclo- Sure and containing a light sensitive device, Said device being provided With a pointer vvhich n10ves over a scale calibrated in degrees of Sheerness, said enclosures being spaced apart a Sucient distance to receive a double thickness 0f the hosiery through vvhich light is projected ont0 the 1ight sensitive unit for deternining the degree 0f sheerness of the hosiery, and a light filter interp0sed between the hosiery and the opening in the iirst Inentioned encl0Su1 e.

3. Apparatus for Ineasuring the sheerness 0f vv0!nen,s hosiery, Said apparatus COInprising a light source contained in an enclosure provided vvith an opetli1g, said light source being oonstituted of an electric lanp to which energy is supplied` fr0Tn ai constant v01tage Source, a Second enc10sure having an opening presented to the opening in the rSt enc10sure and containing 9" ight'sensitive device, Said device being provided vvith a pointer which nloves 0ver 9@ scale cli brated in degrees of Sheerness, and a stretching franle for supporting the hosiery in doubled condition betvveen said enc10sures JEROME BARNEY. 

